1. Launch the game "Make All Happy" on your mobile device.

2. Observe the grid of blocks on the screen—each block is either in a happy or unhappy state.

3. Tap on any block to change its state.

4. When you tap a block, it will toggle between happy and unhappy.

5. The twist: tapping a block also toggles the state of its direct horizontal and vertical neighbors.

6. Use this mechanic to your advantage by planning each tap carefully.

7. The objective is to make every block on the grid happy.

8. Continue tapping and strategizing to influence neighboring blocks effectively.

9. Pay attention to chain reactions and how each tap affects multiple blocks.

10. Undo your moves if needed to experiment with different approaches.

11. The level is complete when all blocks are in the happy state.

12. Progress through increasingly challenging levels as you sharpen your puzzle-solving skills.

13. Use your finger or touch pad to interact with the blocks at any time.

14. Practice and observation are key; watch how blocks react and learn from each attempt.

15. Keep playing and enjoy the satisfying moment when you make all happy.